IMPORTANT: Edit slime.ash and change use_tatter_like
from false to true.

If your free-runaway item of choice is not green smoke bombs,
you also need to edit slime.ash and change which_tatter
to reflect that.

Save your Slime Hates It & hipposkin poncho outfit as "maxml".

Save a non-Slime Hates It outfit as "minml".

Fire up KoLMafia, go to the CLI pane, and type "slime 225".

Kill Mother Slime.
A good method is to buff your +spell damage and use two each of
the 120MP hobo attack spells.
You'll also want to buff your muscle so you can survive,
and your +items so you get more alveoli.